The flowchart editor
that
thinks with you

A modern, lightweight diagram editor with a built-in AI co-pilot. Describe your diagram in plain language and watch it appear — or build it node by node with precision tools.

Download on the Mac App Store
No sign-up· No Ads· No subscription
AI features use your own Google Gemini API key — free tier available
MonoFlow canvas interface
01 · AI Co-Pilot

Describe it.
Watch it appear.

Powered by Google Gemini — describe your diagram in plain language, attach a screenshot, or upload source code. The AI builds your flowchart live, node by node, connection by connection.

01
Describe your idea “Build me a customer
onboarding flow...”
sends prompt to
AI Co-Pilot Powered by
Google Gemini
builds live on
Your diagram Start Send Invite Verified? Retry

AI features require a Google Gemini API key — the core editor works without one. How to get one →

02 · Efficient Editing

Built for speed.
Frictionless workflow.

Flowcharting shouldn't be a chore. MonoFlow is packed with tools designed to get out of your way and let your ideas flow as fast as you can think.

Drag & Drop Creation

Add nodes instantly onto the canvas. WYSIWYG precision.

Smart Connections

Click targets to auto-route perfectly. No manual line teasing.

Auto-Layout

Instantly organize messy diagrams with a single click.

Batch Operations

Select multiple elements at once to copy or delete in bulk.

03 · Interactive Canvas

Think outside
the borders.

An immersive, boundless environment perfectly built to handle your grandest architectural ideas.

Infinite Workspace

Expand your flow endlessly in any direction. Never run out of room for complex diagrams.

Pan & Zoom

Navigate gracefully with trackpad gestures. Zoom out for the big picture, or dive deep into details.

Snap to Grid

Keep your flowcharts perfectly aligned. Toggle grid snapping on for structure or off for absolute freedom.

Animated Flow

Bring diagrams to life with animated connection lines that visualize the direction of data movement.

Slide to Reset

Drag the slider all the way to the right to wipe the canvas clean — a deliberate gesture that prevents accidental resets.

04 · Adaptive Themes

Colorful, structured,
instantly readable

Every node type carries its own color — Processes, Decisions, Data I/O, Terminators, and more. Drag to connect, click to edit, and fine-tune every element.

MonoFlow Default Theme MonoFlow Dark Mode MonoFlow Raw Theme
{
  "diagram": "MonoFlow",
  "version": "1.0",
  "nodes": [
    { "id": "n1", "type": "Start" },
    { "id": "n2", "type": "Process" }
  ],
  "edges": [
    { "from": "n1", "to": "n2" }
  ]
}
05 · File Management

Built for clarity.
Safe by design.

Readable JSON files for easy maintenance, tiny scalable SVGs,
and continuous auto-save so you never lose your work.

JSON

Local JSON Save

Data stays on your Mac. Human-readable text format makes version control a breeze.

SVG

Crystal Clear Export

Export infinitely scalable vector graphics. Tiny file sizes perfectly suited for documentation.

Reusable Fragments

Save snippets of flows and load them directly into your current canvas. Build massive architectures easily.

Auto-Save Engine

Never lose your work. Progress is quietly and continuously saved locally in the background.

MonoFlow

Start building better flowcharts today

No ads. No sign-up. No data collection. Just download and create.
AI features use your own Google Gemini key — free tier available, no credit card required.

Download on the Mac App Store